Its team was nine times champion of Poznan's A-Class Regional League (see: Lower Level Football Leagues in Interwar Poland) - in 1927, 1929, 1930, 1931, 1932, 1933, 1934, 1934–1935, 1937–1938 and in 1938–1939.
Despite these successes, Legia never managed to win promotion to the Ekstraklasa.
It was closest in the 1939 qualifying games, when it faced three opponents - Śląsk Świętochłowice, Junak Drohobycz and Śmigły Wilno.
However, the outbreak of World War II cut these games.
After the war, the new Soviet-installed communist government of Poland did not favor prewar teams, and Legia, as well as Warta, were sidelined, and replaced as the city's dominant team with Lech Poznań.